75417121716664 has 64 divisors (see below), whose sum is σ = 174043635675840. Its totient is φ = 29834637880320.

The previous prime is 75417121716653. The next prime is 75417121716691. The reversal of 75417121716664 is 46661712171457.

It is a happy number.

It is a super-2 number, since 2×75417121716664² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 75417121716599 and 75417121716608.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30063874 + ... + 32475694.

It is an arithmetic number, because the mean of its divisors is an integer number (2719431807435).

Almost surely, 2^{75417121716664} is an apocalyptic number.

It is an amenable number.

75417121716664 is an abundant number, since it is smaller than the sum of its proper divisors (98626513959176).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

75417121716664 is a wasteful number, since it uses less digits than its factorization.

75417121716664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2454800 (or 2454796 counting only the distinct ones).

The product of its digits is 11854080, while the sum is 58.

The spelling of 75417121716664 in words is "seventy-five trillion, four hundred seventeen billion, one hundred twenty-one million, seven hundred sixteen thousand, six hundred sixty-four".